Welcome to planDisney, Angel! We are so glad you are here! Oh boy! I am so excited that you will be visiting Disneyland Resort very soon. You will have the hap-happiest time walking down Main Street, U.S.A. with a churro (or two!) in hand, and reveling in all the magic.
Angel, because you already have purchased tickets, and now want to upgrade to the Park Hopper (which by the way, is a smart choice!) you can do that faster than Fairy Godmother says "Bibbidi Bobbidi Boo!". All you have to do is call the
Tickets office at (714) 781-4636, and speak to a Cast Member! You can also do it directly on the
Disneyland app, by visiting the Tickets and Passes Screen and depending on if you have a single-day or multi-day tickets, looking for the time frame in which to do so. Single-day tickets have to be upgraded by midnight on the day of your visit, and if you have multi-day tickets, by the last valid day of your park ticket.
I hope you enjoy visiting the Happiest Place on Earth, Angel, because that is what Disneyland truly is!
Frances